Supersonic Air Flow due to Solid-Liquid Impact

S. Gekle; I.R. Peters; Jose Manuel Gordillo; Roger M. van der Meer; Detlef Lohse

doi:10.1103/PhysRevLett.104.024501

Supersonic Air Flow due to Solid-Liquid Impact

S. Gekle, I.R. Peters, Jose Manuel Gordillo, Roger M. van der Meer, Detlef Lohse

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

A solid object impacting on liquid creates a liquid jet due to the collapse of the impact cavity. Using visualization experiments with smoke particles and multiscale simulations, we show that in addition, a high-speed air jet is pushed out of the cavity. Despite an impact velocity of only 1 m/s, this air jet attains supersonic speeds already when the cavity is slightly larger than 1 mm in diameter. The structure of the air flow closely resembles that of compressible flow through a nozzle—with the key difference that here the “nozzle” is a liquid cavity shrinking rapidly in time

Original language	Undefined
Pages (from-to)	024501-1-024501-4
Number of pages	4
Journal	Physical review letters
Volume	104
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevLett.104.024501
Publication status	Published - 14 Oct 2010

Keywords

METIS-263397
IR-79234

Access to Document

10.1103/PhysRevLett.104.024501

supersonic

Cite this

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abstract = "A solid object impacting on liquid creates a liquid jet due to the collapse of the impact cavity. Using visualization experiments with smoke particles and multiscale simulations, we show that in addition, a high-speed air jet is pushed out of the cavity. Despite an impact velocity of only 1 m/s, this air jet attains supersonic speeds already when the cavity is slightly larger than 1 mm in diameter. The structure of the air flow closely resembles that of compressible flow through a nozzle—with the key difference that here the “nozzle” is a liquid cavity shrinking rapidly in time",

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AU - Gekle, S.

AU - Peters, I.R.

AU - Gordillo, Jose Manuel

AU - van der Meer, Roger M.

AU - Lohse, Detlef

PY - 2010/10/14

Y1 - 2010/10/14

N2 - A solid object impacting on liquid creates a liquid jet due to the collapse of the impact cavity. Using visualization experiments with smoke particles and multiscale simulations, we show that in addition, a high-speed air jet is pushed out of the cavity. Despite an impact velocity of only 1 m/s, this air jet attains supersonic speeds already when the cavity is slightly larger than 1 mm in diameter. The structure of the air flow closely resembles that of compressible flow through a nozzle—with the key difference that here the “nozzle” is a liquid cavity shrinking rapidly in time

AB - A solid object impacting on liquid creates a liquid jet due to the collapse of the impact cavity. Using visualization experiments with smoke particles and multiscale simulations, we show that in addition, a high-speed air jet is pushed out of the cavity. Despite an impact velocity of only 1 m/s, this air jet attains supersonic speeds already when the cavity is slightly larger than 1 mm in diameter. The structure of the air flow closely resembles that of compressible flow through a nozzle—with the key difference that here the “nozzle” is a liquid cavity shrinking rapidly in time

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